Duane retraction syndrome (DRS): classification

Evidence-based neurology checklist on duane retraction syndrome (drs): classification: DRS Type I: features Absent or limited abduction with normal adduction Absent or hypoplastic abducens nerve Enlargement of the oculomotor nerve Hypoplasia of the superior oblique muscle (SOM) Lateral rectus…

DRS Type I: features

  • Absent or limited abduction with normal adduction
  • Absent or hypoplastic abducens nerve
  • Enlargement of the oculomotor nerve
  • Hypoplasia of the superior oblique muscle (SOM)
  • Lateral rectus innervated by an aberrant oculomotor nerve branch

DRS Type II: features

DRS Type III: features

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